Earthworm Migration Update: April 16, 2001 Even though they only travel a few feet, earthworms undergo a "vertical" migration each spring after the ground thaws. Worms have wiggled their way to the surface in the following places: Link to Data: First Earthworms Sighted Please Report the Unique "Signs Of Spring" from Your Part of the World! Your sightings of first frogs, earthworms, emerging leaves, flowing sap, melting ice--and other spring events will to be incorporated into these "Signs of Spring" updates. The Next Signs of Spring Will be Posted on April 23, 2001. Copyright 2001 Journey North. All Rights Reserved. Please send all questions, comments, and suggestions to our feedback form